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OverLord2011 [107]
3 years ago
13

6. Solve by Elimination: 4x + y = 7 3x - y = 0

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
8 0
X=1, y=3 see attached photo for steps

Ivan3 years ago
4 0

Answer:

{x,y} = {1,-4}  

Step-by-step explanation:

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Geometry help needed!
lilavasa [31]

Answer:

13.76

Step-by-step explanation:

Area of the whole

The area of the whole = s^2 (the firgure is a square

s = 8

Area of the whole = 8^2 = 64

Area of the unshaded part

The 2 half circles = 1 whole circle

The radius of the 1/2 circle = 4 (eight has been cut in half)

Area of two half circles = 2* (pi r^2/2)

Area of two half circles = 2 * (pi 4^2/2)

area of two half circles =  16*pi

Area of the shaded area

Area of the shaded area = area of the whole - area of the unshaded area

Area of the shaded area = 64 - 16*pi

Area of the shaded area = 64 - 3.14*16 = 13.76

4 0
3 years ago
the length of a rectangular carpet is 2 times it's width. the area is 128 square feet. What is the length?
dangina [55]

256 is the answer. I know this because 128+128 equals 256.
8 0
3 years ago
The graph shows a car's value as a function of its age.
otez555 [7]
The car was worth $10,000.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Three hundred high school seniors were surveyed about their intended college majors. The results are displayed in the Venn Diagr
atroni [7]

Answer: \frac{1}{10}

Step-by-step explanation:

Since, The total number of student = 300

Out of which,

The number of students who are only in Maths  = 120

And, The number of students who are only in Science  = 50

While, the students who are not from any subject = 100

Hence, the number of student who are from both maths and science = Total student - Maths student (only) - science student (only) - None

= 300 - 120 - 50 - 100

= 30

That is, there are 30 students who are both from science and maths,

Thus, the probability of selecting one student who is both from maths and science = 30/300 = 1/10

3 0
3 years ago
Read 2 more answers
Please find the value of x and y.​
Sophie [7]

Answer:

x = 11

y = 3

Step-by-step explanation:

4y+1=6y-5

-4y   -4y

+1   =2y-5

+5       +5

  6/2=2y/2

      3=y

2x-4=  18

  +4    +4

2x/2 = 22/2

      x=11

7 0
3 years ago
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